QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Mona Passage

· 15 km deep · released about 8.7 lb of TNT

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10 km30 km60 km120 km N San Germán Municipio 7 kmLas Marías Municipio 8 kmMaricao Municipio 10 kmHormigueros Municipio 10 kmSabana Grande Municipio 12 kmAñasco Municipio 17 kmSan Sebastián Municipio 19 kmYauco Municipio 20 kmLares Municipio 20 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.6 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
San Germán Municipio, 7 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2614 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 18.1683, -67.0258. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Germán Municipio, PR 7 km (4 mi) N of here earthquakes near San Germán Municipio
Las Marías Municipio, PR 8 km (5 mi) SW of here earthquakes near Las Marías Municipio
Maricao Municipio, PR 10 km (6 mi) W of here earthquakes near Maricao Municipio
Hormigueros Municipio, PR 10 km (6 mi) ENE of here earthquakes near Hormigueros Municipio
Sabana Grande Municipio, PR 12 km (8 mi) NW of here earthquakes near Sabana Grande Municipio
Añasco Municipio, PR 17 km (11 mi) SE of here earthquakes near Añasco Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

40 earthquakes have been recorded within 50 km since this one.

  1. 2.1 12 km NNW of Rincón, Puerto Rico
  2. 1.9 3 km SW of Las Marías, Puerto Rico
  3. 1.7 10 km N of Yauco, Puerto Rico
  4. 1.8 1 km ENE of Mayagüez, Puerto Rico
  5. 1.9 10 km NNE of Isabela, Puerto Rico
  6. 2.1 2 km SW of Maricao, Puerto Rico
  7. 1.6 12 km WNW of Puerto Real, Puerto Rico
  8. 2.2 1 km NNW of Pole Ojea, Puerto Rico
  9. 1.6 8 km W of Mayagüez, Puerto Rico
  10. 2.0 2 km S of Mayagüez, Puerto Rico
  11. 1.9 1 km ENE of La Playa, Puerto Rico
  12. 1.8 2 km WNW of Guayanilla, Puerto Rico
  13. 1.8 7 km SW of Jayuya, Puerto Rico
  14. 1.6 3 km SW of Puerto Real, Puerto Rico
  15. 2.5 4 km E of Mayagüez, Puerto Rico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.